Only push an enum into the environment, if it has a name.
[cparser] / main.c
diff --git a/main.c b/main.c
index a42cfe6..df18c2e 100644 (file)
--- a/main.c
+++ b/main.c
@@ -7,9 +7,36 @@
 #include <stdbool.h>
 #include <errno.h>
 #include <string.h>
-#include <unistd.h>
 #include <assert.h>
 
+#ifdef _WIN32
+
+#include <fcntl.h>
+#include <io.h>
+
+/* no eXecute on Win32 */
+#define X_OK 0
+#define W_OK 2
+#define R_OK 4
+
+#define O_RDWR          _O_RDWR
+#define O_CREAT         _O_CREAT
+#define O_EXCL          _O_EXCL
+#define O_BINARY        _O_BINARY
+
+/* remap some names, we are not in the POSIX world */
+#define access(fname, mode)      _access(fname, mode)
+#define mktemp(tmpl)             _mktemp(tmpl)
+#define open(fname, oflag, mode) _open(fname, oflag, mode)
+#define fdopen(fd, mode)         _fdopen(fd, mode)
+#define popen(cmd, mode)         _popen(cmd, mode)
+#define pclose(file)             _pclose(file)
+
+#else
+#include <unistd.h>
+#define HAVE_MKSTEMP
+#endif
+
 #ifndef WITH_LIBCORE
 #define WITH_LIBCORE
 #endif
 
 #include "lexer.h"
 #include "token_t.h"
+#include "types.h"
 #include "type_hash.h"
 #include "parser.h"
 #include "ast2firm.h"
+#include "diagnostic.h"
+#include "lang_features.h"
+#include "driver/firm_opt.h"
 #include "driver/firm_cmdline.h"
 #include "adt/error.h"
 #include "write_fluffy.h"
-#include "driver/firm_opt.h"
+#include "revision.h"
 
 #ifndef PREPROCESSOR
 #define PREPROCESSOR "cpp -std=c99 -U__WCHAR_TYPE__ -D__WCHAR_TYPE__=int"
 #endif
 
 #ifndef LINKER
-#define LINKER       "gcc"
+#define LINKER    "gcc -m32"
 #endif
 
 #ifndef ASSEMBLER
-#define ASSEMBLER "as"
+#define ASSEMBLER "as --32"
 #endif
 
-#ifdef _WIN32
-/* remap some names */
-#define popen(cmd, mode)  _popen(cmd, mode)
-#define pclose(file)      _pclose(file)
-#endif /* _WIN32 */
+/** The current c mode/dialect. */
+unsigned int c_mode = _C89|_C99|_GNUC;
 
-static int  verbose;
-static bool do_dump;
+/** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
+unsigned int machine_size = 32;
+
+/** true if the char type is signed. */
+bool char_is_signed = true;
+
+/** true for strict language checking. */
+bool strict_mode = false;
+
+static int            verbose;
+static struct obstack cppflags_obst;
+
+#if defined(_DEBUG) || defined(FIRM_DEBUG)
+/**
+ * Debug printf implementation.
+ *
+ * @param fmt  printf style format parameter
+ */
+void dbg_printf(const char *fmt, ...)
+{
+       va_list list;
+
+       if (firm_dump.debug_print) {
+               va_start(list, fmt);
+               vprintf(fmt, list);
+               va_end(list);
+       }  /* if */
+}
+#endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 
 static void initialize_firm(void)
 {
@@ -56,13 +111,6 @@ static void initialize_firm(void)
        dump_keepalive_edges(1);
 }
 
-static void dump(ir_graph *irg, const char *suffix)
-{
-       if(do_dump) {
-               dump_ir_block_graph(irg, suffix);
-       }
-}
-
 static void get_output_name(char *buf, size_t buflen, const char *inputname,
                             const char *newext)
 {
@@ -113,12 +161,13 @@ static void lextest(FILE *in, const char *fname)
 static FILE* preprocess(FILE* in, const char *fname)
 {
        char buf[4096];
+       const char *flags = obstack_finish(&cppflags_obst);
 
        if(in != stdin) {
-               snprintf(buf, sizeof(buf), PREPROCESSOR " %s", fname);
+               snprintf(buf, sizeof(buf), PREPROCESSOR " %s %s", flags, fname);
        } else {
                /* read from stdin */
-               snprintf(buf, sizeof(buf), PREPROCESSOR " -");
+               snprintf(buf, sizeof(buf), PREPROCESSOR " %s -", flags);
        }
 
        if(verbose) {
@@ -204,6 +253,15 @@ static const char *get_tempdir(void)
        return tmpdir;
 }
 
+#ifndef HAVE_MKSTEMP
+/* cheap and nasty mkstemp replacement */
+static int mkstemp(char *templ)
+{
+       mktemp(templ);
+       return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
+}
+#endif
+
 /**
  * an own version of tmpnam, which: writes in a buffer, appends a user specified
  * suffix, emits no warnings during linking (like glibc/gnu ld do for tmpnam)...
@@ -249,28 +307,8 @@ void lower_compound_params(void)
        lower_calls_with_compounds(&params);
 }
 
-static void create_firm_prog(translation_unit_t *unit)
-{
-       translation_unit_to_firm(unit);
-
-       //dump_globals_as_text(dump_verbosity_max, "-globals");
-
-       int n_irgs = get_irp_n_irgs();
-       for(int i = 0; i < n_irgs; ++i) {
-               ir_graph *const irg = get_irp_irg(i);
-               dump(irg, "-start");
-       }
-
-       lower_compound_params();
-       lower_highlevel();
-
-       for(int i = 0; i < n_irgs; ++i) {
-               ir_graph *const irg = get_irp_irg(i);
-               dump(irg, "-lower");
-       }
-}
-
 typedef enum compile_mode_t {
+       ParseOnly,
        Compile,
        CompileDump,
        CompileAssemble,
@@ -289,130 +327,207 @@ int main(int argc, char **argv)
 {
        initialize_firm();
 
-       init_symbol_table();
-       init_tokens();
-       init_types();
-       init_typehash();
-       init_lexer();
-       init_ast();
-       init_parser();
-       init_ast2firm();
-
-       const char *input        = NULL;
-       const char *outname      = NULL;
-       const char *dumpfunction = NULL;
-       compile_mode_t mode = CompileAssembleLink;
+       const char     *input        = NULL;
+       const char     *outname      = NULL;
+       const char     *dumpfunction = NULL;
+       compile_mode_t  mode         = CompileAssembleLink;
+
+       obstack_init(&cppflags_obst);
+
+#define GET_ARG_AFTER(def, args)                                             \
+       def = &arg[sizeof(args)-1];                                              \
+       if(def[0] == '\0') {                                                     \
+               ++i;                                                                 \
+               if(i >= argc) {                                                      \
+                       fprintf(stderr, "error: expected argument after '" args "'\n");  \
+                       argument_errors = true;                                          \
+                       break;                                                           \
+               }                                                                    \
+               def = argv[i];                                                       \
+               if(def[0] == '-' && def[1] != '\0') {                                \
+                       fprintf(stderr, "error: expected argument after '" args "'\n");  \
+                       argument_errors = true;                                          \
+                       continue;                                                        \
+               }                                                                    \
+       }
 
+       bool help_displayed  = false;
+       bool argument_errors = false;
        for(int i = 1; i < argc; ++i) {
                const char *arg = argv[i];
                if(strncmp(arg, "-o", 2) == 0) {
-                       outname = &arg[2];
-                       if(outname[0] == '\0') {
-                               ++i;
-                               if(i >= argc) {
-                                       usage(argv[0]);
-                                       return 1;
-                               }
-                               outname = argv[i];
-                       }
+                       GET_ARG_AFTER(outname, "-o");
                } else if(strcmp(arg, "-c") == 0) {
                        mode = CompileAssemble;
                } else if(strcmp(arg, "-S") == 0) {
                        mode = Compile;
+               } else if(strcmp(arg, "--gcc") == 0) {
+                       c_mode |= _GNUC;
+               } else if(strcmp(arg, "--no-gcc") == 0) {
+                       c_mode &= ~_GNUC;
+               } else if(strcmp(arg, "--ms") == 0) {
+                       c_mode |= _MS;
+               } else if(strcmp(arg, "--signed-chars") == 0) {
+                       char_is_signed = true;
+               } else if(strcmp(arg, "--unsigned-chars") == 0) {
+                       char_is_signed = false;
+               } else if(strcmp(arg, "--strict") == 0) {
+                       strict_mode = true;
+               } else if(strcmp(arg, "--no-ms") == 0) {
+                       c_mode &= ~_MS;
                } else if(strcmp(arg, "--lextest") == 0) {
                        mode = LexTest;
                } else if(strcmp(arg, "--print-ast") == 0) {
                        mode = PrintAst;
                } else if(strcmp(arg, "--print-fluffy") == 0) {
                        mode = PrintFluffy;
-               } else if(strcmp(arg, "--dump") == 0) {
-                       do_dump = true;
+               } else if(strcmp(arg, "--version") == 0) {
+                       firm_version_t ver;
+                       firm_get_version(&ver);
+                       printf("cparser (%d.%d %s) using libFirm (%u.%u", 0, 1, cparser_REVISION, ver.major, ver.minor);
+                       if(ver.revision[0] != 0) {
+                               putchar(' ');
+                               fputs(ver.revision, stdout);
+                       }
+                       if(ver.build[0] != 0) {
+                               putchar(' ');
+                               fputs(ver.build, stdout);
+                       }
+                       puts(")\n");
+                       exit(EXIT_SUCCESS);
+               } else if(strcmp(arg, "-fsyntax-only") == 0) {
+                       mode = ParseOnly;
+               } else if(strncmp(arg, "-I", 2) == 0) {
+                       const char *opt;
+                       GET_ARG_AFTER(opt, "-I");
+                       obstack_printf(&cppflags_obst, " -I%s", opt);
+               } else if(strncmp(arg, "-D", 2) == 0) {
+                       const char *opt;
+                       GET_ARG_AFTER(opt, "-D");
+                       obstack_printf(&cppflags_obst, " -D%s", opt);
+               } else if(strncmp(arg, "-U", 2) == 0) {
+                       const char *opt;
+                       GET_ARG_AFTER(opt, "-U");
+                       obstack_printf(&cppflags_obst, " -U%s", opt);
                } else if(strcmp(arg, "--dump-function") == 0) {
                        ++i;
                        if(i >= argc) {
-                               usage(argv[0]);
-                               return 1;
+                               fprintf(stderr, "error: "
+                                       "expected argument after '--dump-function'\n");
+                               argument_errors = true;
+                               break;
                        }
                        dumpfunction = argv[i];
                        mode         = CompileDump;
                } else if(strcmp(arg, "-v") == 0) {
                        verbose = 1;
                } else if(arg[0] == '-' && arg[1] == 'f') {
-                       const char *opt = &arg[2];
-                       if(opt[0] == 0) {
-                               ++i;
-                               if(i >= argc) {
-                                       usage(argv[0]);
-                                       return 1;
-                               }
-                               opt = argv[i];
-                               if(opt[0] == '-') {
-                                       usage(argv[0]);
-                                       return 1;
+                       const char *opt;
+                       GET_ARG_AFTER(opt, "-f");
+
+                       if(strcmp(opt, "omit-frame-pointer") == 0) {
+                               firm_be_option("omitfp");
+                       } else if(strcmp(opt, "no-omit-frame-pointer") == 0) {
+                               firm_be_option("omitfp=no");
+                       } else {
+                               int res = firm_option(opt);
+                               if (res == 0) {
+                                       fprintf(stderr, "error: unknown Firm option '-f %s'\n",
+                                               opt);
+                                       argument_errors = true;
+                                       continue;
+                               } else if (res == -1) {
+                                       help_displayed = true;
                                }
                        }
-                       int res = firm_option(opt);
-                       if (res == 0) {
-                               fprintf(stderr, "Error: unknown Firm option %s\n", opt);
-                               usage(argv[0]);
-                               return 1;
-                       } else if (res == -1) { /* help option */
-                               exit(0);
-                       }
                } else if(arg[0] == '-' && arg[1] == 'b') {
-                       const char *opt = &arg[2];
-                       if(opt[0] == 0) {
-                               ++i;
-                               if(i >= argc) {
-                                       usage(argv[0]);
-                                       return 1;
-                               }
-                               opt = argv[i];
-                               if(opt[0] == '-') {
-                                       usage(argv[0]);
-                                       return 1;
-                               }
-                       }
+                       const char *opt;
+                       GET_ARG_AFTER(opt, "-b");
                        int res = firm_be_option(opt);
                        if (res == 0) {
-                               fprintf(stderr, "Error: unknown Firm backend option %s\n", opt);
-                               usage(argv[0]);
-                               return 1;
-                       } else if (res == -1) { /* help option */
-                               exit(0);
+                               fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
+                                       opt);
+                               argument_errors = true;
+                       } else if (res == -1) {
+                               help_displayed = true;
+                       }
+               } else if(arg[0] == '-' && arg[1] == 'm') {
+                       const char *opt;
+                       GET_ARG_AFTER(opt, "-m");
+                       char *endptr;
+                       long int value = strtol(opt, &endptr, 10);
+                       if (*endptr != '\0') {
+                               fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
+                               argument_errors = true;
+                       }
+                       if (value != 16 && value != 32 && value != 64) {
+                               fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
+                               argument_errors = true;
+                       } else {
+                               machine_size = (unsigned int)value;
                        }
                } else if(arg[0] == '-') {
                        if (arg[1] == '\0') {
-                               input = "-";
-                       } else if (arg[1] == 'D' ||
-                                       arg[1] == 'O' ||
-                                       arg[1] == 'f' ||
+                               if(input != NULL) {
+                                       fprintf(stderr, "error: multiple input files specified\n");
+                                       argument_errors = true;
+                               } else {
+                                       input = arg;
+                               }
+                       } else if(strcmp(arg, "-pedantic") == 0) {
+                               fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
+                       } else if(arg[1] == 'O' ||
                                        arg[1] == 'W' ||
                                        arg[1] == 'g' ||
                                        strncmp(arg + 1, "std=", 4) == 0) {
-                               fprintf(stderr, "Warning: Ignoring option '%s'\n", arg);
+                               fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
                        } else {
-                               usage(argv[0]);
-                               return 1;
+                               fprintf(stderr, "error: unknown argument '%s'\n", arg);
+                               argument_errors = true;
                        }
                } else {
                        if(input != NULL) {
-                               fprintf(stderr, "Error: multiple input files specified\n");
-                               usage(argv[0]);
-                               return 1;
+                               fprintf(stderr, "error: multiple input files specified\n");
+                               argument_errors = true;
                        } else {
                                input = arg;
                        }
                }
        }
 
-       FILE *out;
+       /* we do the lowering in ast2firm */
+       firm_opt.lower_bitfields = FALSE;
+
+       if(help_displayed) {
+               return !argument_errors;
+       }
+       if(argument_errors) {
+               usage(argv[0]);
+               return 1;
+       }
+
+       gen_firm_init();
+       init_symbol_table();
+       init_tokens();
+       init_types();
+       init_typehash();
+       init_basic_types();
+       init_lexer();
+       init_ast();
+       init_parser();
+       init_ast2firm();
+
+       FILE *out = NULL;
        char  outnamebuf[4096];
        if(outname == NULL) {
                switch(mode) {
                case PrintAst:
                case PrintFluffy:
                case LexTest:
+                       if(outname == NULL)
+                               outname = "-";
+                       break;
+               case ParseOnly:
                        break;
                case Compile:
                        get_output_name(outnamebuf, sizeof(outnamebuf), input, ".s");
@@ -431,17 +546,18 @@ int main(int argc, char **argv)
                        outname = "a.out";
                        break;
                }
-               assert(outname != NULL);
        }
 
-       if(strcmp(outname, "-") == 0) {
-               out = stdout;
-       } else {
-               out = fopen(outname, "w");
-               if(out == NULL) {
-                       fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
-                               strerror(errno));
-                       return 1;
+       if(outname != NULL) {
+               if(strcmp(outname, "-") == 0) {
+                       out = stdout;
+               } else {
+                       out = fopen(outname, "w");
+                       if(out == NULL) {
+                               fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
+                                       strerror(errno));
+                               return 1;
+                       }
                }
        }
 
@@ -469,20 +585,32 @@ int main(int argc, char **argv)
        FILE *preprocessed_in = preprocess(in, input);
        translation_unit_t *const unit = do_parsing(preprocessed_in, input);
        pclose(preprocessed_in);
-       if(unit == NULL)
-               return 1;
+       if(unit == NULL) {
+               /* parsing failed because of errors */
+               fprintf(stderr, "%u error(s), %u warning(s)\n", error_count, warning_count);
+               return EXIT_FAILURE;
+       }
+       if (warning_count > 0) {
+               fprintf(stderr, "%u warning(s)\n", warning_count);
+       }
 
        if(mode == PrintAst) {
+               type_set_output(out);
                ast_set_output(out);
                print_ast(unit);
                return 0;
        }
        if(mode == PrintFluffy) {
+               type_set_output(out);
+               ast_set_output(out);
                write_fluffy_decls(out, unit);
        }
 
-       gen_firm_init();
-       create_firm_prog(unit);
+       translation_unit_to_firm(unit);
+
+       if(mode == ParseOnly) {
+               return 0;
+       }
 
        FILE *asm_out;
        char  asm_tempfile[1024];
@@ -545,6 +673,8 @@ int main(int argc, char **argv)
                do_link(outname, obj_tfile);
        }
 
+       obstack_free(&cppflags_obst, NULL);
+
        exit_ast2firm();
        exit_parser();
        exit_ast();